rare-earth element; rare-earth metal
hope, beg, request, pray, beseech, Greece, dilute (acid), rare, few, phenomenal
キ / まれ
soil, earth, ground, Turkey
ド / つち
sort, kind, variety, class, genus
ルイ / たぐ.い
beginning, former time, origin
ゲン / もと
elementary, principle, naked, uncovered
ソ / もと